Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
mýkja
←
Old Norse
mjúkr
(mention)
→
Westrobothnian
mauk
(cognate)
→
Icelandic
mýkja
(derived)